Knife



Dec. 2, 192.11. A. PAOLAN-roNlo y 2,264,453

KNIFE Filed Jan. 27, 1940 IN VEN TDR.' ifa/2lb /Dao/a/fzwjb A TTORNEYS.

Patented Dec. 2, 1941 UNHTED ori KNIFE Antonio Paolantonio, Johnston, R.I., assignor to Colonial Knife Company, Inc., a corporation of RhodeIsland 11 Claims.

This invention relates to a knife of lthe character often referred to asa tip knife; that is, one in which there are no bolsters at the ends ofa size `adapted to receive rivets therethrough; and this invention hasfor one of its objects to provide a more rugged and stronger hingedmounting of the knife blade than heretofore provided in a knife of thischaracter. n

Another object of the invention is to conceal the rivets which areusually provided for holding the cover upon a knife.

A further object of the invention is to provide a knife in which thecover sections may be held against separating from the metallic plate orscale portions over which they extend.

Another object of the invention is to provide an arrangement whereby thecover sections will be assembled after the metallic portion of the knifeis all in assembled relation so that the main body portion of the knifemay be made up ahead of time and then covers assembled on the bodyportion of the knife in accordance with the choice of the customer toWhom they were furnished.

With these and other objects in view, the invention consists of certainnovel features of construction as will be more fully described andparticularly pointed out in the appended claims.

In the accompanying drawing: y

Fig. l is an elevation of the knife completed;

Fig. 2 is a top plan view thereof; v

Fig. 3 is an elevation of the body portion of the knife with the coverremoved;

Fig. 4 is a top plan View thereof;

Fig. 5 is a section on line 5 5 of Fig. 3;

Fig. 6 is a section on line 6-6 of Fig. 3;

Fig. '7 is a sectional View through one of the plates or scale portionsof the knife; n

Fig. 8 is an elevation of one of the cover sections;

Fig. cover;

Fig. is a sectional View on substantially line Ill-l0 of Fig. 3,illustrating one of the cover sections assembled and another of thecover sections in one of the positions which itA assumes in being movedto assembled position;

Fig. 1l is a sectional view on line II-II of Fig. 10.

Folding knives of the so-called tip type in which there are no bolstersof a size to receive rivets therethrough usually have the rivets eX-tending through the covers which extend along the scale or outer platesof theknife body whereby the rivets hold the knifev body as well as the9 is a top plan or edge view thereof of a cover in assembled relation.The covers are usually of Celluloid or some non-metallic material whichis rather soft and the rivet heads which engage these softer coverportions will permit of some relative movement of the assembled parts ifsome pressure is brought to bear upon the knife blade which is pivotedupon the end rivets of such assembly. Further, the rivets are somewhatunsightly, especially as they sharply contrast with the color of thecover section; and again, when knives are formed up in theabove-mentioned manner, the covers are a part of the complete assemblyand cannot be easily changed if a different colored cover is desired. n

Accordingly, in order to provide a stronger construction I have rivetedthe metal parts of the knife together as a unit body and have assembledthe cover so as to conceal these rivets; the cover being assembled `as aseparate operation enables the body to be made up and the coversassembled as a last operation whereby a large number of bodies maybemade up without covers, and the covers assembled thereon as a lastoperation in accordance with the orders for various colors which may bereceived, thus enabling a large part of the assembly operations to beperformed ahead of time and minimizing the carrying of stock uponmanufacturers shelves.

I further provide for the better holding of the cover in position bywelding the opposite covers together against the metallic scales of theknife; and the following is a more detailed description of the presentembodiment of the invention, illustrating the preferred means by whichthese advantageous results may be accomplished:

With reference to the drawing, Ill designates a center plate and II,outer plates or scales spaced ,from the center plate Il] by spacers I2and I3. These spacers also serve as resilient or spring portions forassisting in holding the knife blades I4 and VI5 in different adjustedpositions.

The knife blades I 4 and I5 are pivoted upon a rivet I6 which extendsthrough the plates and blades to hingedly mount the blades between theplates and also engages the end of each blade so as to hold the bladeineither closed or open position in a usual manner. The rivet Il extendsthrough the plates and spacer at the opposite end of the knife and isheaded over the metallic plates il rso as to hold them firmly inassembled relation. kThe hollow `rivet I tv also extends through theplates and spacer atsuboutwardly to open position, even though there isconsiderable lateral stress brought to bear upon v the blade, theportions which embrace the pivot rivet i6 are well supported againstspreading by the blades by reason of such pressure.

This unit assembly so far described may be 2;;

made up ahead of time or in quantities, leaving the cover sections whichare now to be described to be later assembled.

Each of the scales or plates ii consists of a sheet of stock in whichthe tip ends i9 are split and raised as at 2G so as to provide openings2i beneath these tip portions. The cover, riesig nated generally 22,shown in Fig. 8, is formed of non-metallic material such, for instance,as Celluloid, although any moldable material which is somewhat flexiblemay be provided. IThis cover section is molded with fingers 23 at eitherend and a projecting portion 24 at its middle point which will be insuch position that it may extend into the hollow rivet i8 above referredto.

These cover sections will be of Various colors and will be assembledonto the body of the knife in the color ordered by iiexing to draw thefingers 23 at the ends toward each other a distance suiiicient toproject them into the slots 2i in the scale and beneath the tips andthen releasing to permit these sections to move back into a straightenedposition and by such straightening cause the fingers 23 to extendbeneathf heat the knife at this location so that a welding v of the ends26 of the projections 2li may occur,

or I may so moisten the end portions of the projections 24 with asolvent that they will become softened and upon pressure forcing thesetwo tips together, they will become welded for effectively becoming asingle piece extending through the rivet i8. One such solvent which maybe used for Celluloid is acetone.

In this manner, when the portions 24 become dried and hardened, the twocover sections will be held against movement apart or separation, andnotwithstanding changes in temperature which often affect Celluloid, thecover sections will be held firmly against the scales or plates Il andagainst separation or release therefrom, While at the same time coveringthe rivets i6, Il, I8 making a more sightly appearance and enabling therivets to engage the metal surfaces to better hold the parts againststresses which may occur.

The foregoing description is directed solely towards the constructionillustrated, but I desire it to be understood that I reserve theprivilege of resorting to all the mechanical changes to which the deviceis susceptible.

I claim:

1. In a tip knife, a plurality of metal plates, a spacer between saidplates, rivets extending through said plates and headed over in contactwith said plates, a non-metallic cover over said rivets hiding the samefrom View, means to secure said cover in said assembled position, one ofsaid rivets being hollow, and said cover being provided with anon-metallic projection extending well into said hollow rivet.

2. In a tip knife a plurality of metal plates, a spacer between saidplates, rivets extending through said plates and headed over in contactwith said plates, non-metallic covers over said rivets hiding the samefrom View, means to secure said covers in said assembled position, oneof said rivets being hollow, and means extending through said hollowrivet from opposite sides thereof to lock the covers together againstoutward movement.

3. In a tip knife, a plurality of metal plates, a spacer between saidplates, rivets extending through said plates and headed over in contactwith said plates, non-metallic covers over said rivets hiding the samefrom view, means to secure said cover in said assembled position, one ofsaid rivets being hollow, said covers being each provided with aprojection to extend into said hollow rivet from opposite sides thereofand said projections being secured together.

4. The method of securing a non-metallic cover on a knife which consistsin molding the cover in side sections with a projection on each sectionand welding said projections together through the knife to hold theopposite sections on each side of the knife.

5. In a tip knife, a pair of outer metal plates, a spacer between saidplates, rivets extending through said plates and headed over in contactwith said plates to provide a unitary assembly,

and non-metallic covers on opposite sides of said riveted assembly oversaid rivets hiding the same from View, said covers being integrallyconnected to each other by non-metallic material extending through saidriveted assembly.

6. In a tip knife, a pair of outer metal plates, a spacer between saidplates, rivets extending through said plates and headed over in contactwith said plates to provide a unitary assembly, non-metallic covers onopposite sides of said riveted assembly over said rivets hiding the samefrom view, and means carried by each plate to secure one of said coversin assembled relation thereto, said covers being integrally connected toeach other by non-metallic material extending through said rivetedassembly.

'7. In a tip knife, a pair of outer metal plates each having each endportion thereof provided with a hollow integral outer tip with anopening extending thereinto, rivets securing said f plates in assembledrelation, and a cover over said rivets and having end projections formedof the stock of the cover extending through said openings into said tipsto assist in holding the cover over said plate.

8. In a tip knife, a pair of outer metal plates, each having each endportion thereof provided with a hollow integral outer tip with anopening extending thereinto, rivets securing said plates in assembledrelation, a cover over said rivets with the ends thereof extendingthrough said opening into said tips to assist in holding the cover oversaid plate, one of said rivets being hollow, and said cover beingprovided with a projection formed of the same material as the cover andextending into said hollow rivet.

9. In a tip knife, a pair of outer metal plates, each having each endportion thereof provided with a hollow integral outer tip with anopening extending thereinto, rivets securing said plates in assembledrelation, a cover over said rivets with the ends thereof extendingthrough said opening into said tips to assist in holding the cover oversaid plates, one of said rivets being hollow, and non-metallic meansextending wholly through said hollow rivet and fast to each cover tolock the covers together against outward movement.

10. In a tip knife, a pair of outer metal plates, each having each endportion provided with a hollow integral outer tip with an openingextending thereinto, rivets securing said plates in assembled relation,cover sections over said rivets and extending through said openings intosaid tip portions to assist in holding the covers over said plates, oneof said rivets being hollow, said covers being provided with projectionsto extend into said hollow rivet from opposite sides thereof and saidprojections being secured together.

11. The method of forming a backing plate for a tip knife whichconsistsof providing a metal iblank, splitting the stock adjacent the endsthereof and raising the portions of the plate extending from the splitsto the end extremity of the plate to form a pair of hollow integralouter tips.

ANTONIO PAOLANTONIO.

